So I was playing around with the LCv4 and found this neat slightly game breaking exploit
You can try it out too!
we begin by starting a new game, I will start at insane difficulty with 0 money to better illustrate the exploit
Then we go on to design our initial model and set up all the factories

Unsurprisingly the bank is quite unwilling to lend us any money, but fear not! There is a way
Time to make a new project, and after you get to factory selection screen make a new factory and select a huge plot:

in fact, our valuation even increased a bit.
Now you can delete the auxiliary project and your valuation will remain unchanged.
The land plots will remain in their ghost state but if you try to include them in a project you will have to pay for them